摘要
植物的次生生长是一重要的生命活动,特别是植物次生木质部的形成对人类生产和生活具有重大意义。次生生长包括维管组织形成、次生细胞壁形成、木质化、PCD以及心材形成等过程。生长素和多个转录因子家族如MYB、NAC、AP2/EREBP、homeobox、MADS等参与了这一过程的调控,利用分子生物学手段特别是基因组学方法,人们已分离到生长素信号途径基因以及转录因子家族中的相关调控基因。文章介绍了植物次生生长的活动过程,并论述了次生生长过程中调控基因的研究情况。
The secondary growth is a significant biological activity for plant development, and the secondary xylem （i.e. wood） plays an important role for human life. The secondary growth includes several consecutive processes such as vasculax tissue differentiation, secondary cell wall deposition, lignification, PCD and heart wood formation. Considerable evidence indicated that auxin is the major signal involved in several aspects of the ontogeny of the vascular system. At the same time, a suite of putative transcription factors such as MYB, NAC, AP2/EREBP, homeobox and MADS have been implicated in the regulation of the secondary growth. The candidate genes in the signaling and transcriptional regulation which have been identified will assist future investigations to unravel the molecular mechanisms of secondary growth. The important aspect in secondary growth and the identification of regulatory genes were reviewed here.
出处
《遗传》
CAS
CSCD
北大核心
2007年第11期1324-1330,共7页
Hereditas（Beijing)
基金
浙江省科技厅攻关项目(编号:2006C22061)资助~~
关键词
次生生长
生长素
转录因子
调控基因
secondary growth
IAA
transcription factors
regulative genes
